COMPOUNDCRS["HS2 Survey Grid + HS2-VRF height",
    PROJCRS["HS2 Survey Grid",
        BASEGEOGCRS["HS2-IRF",
            DATUM["HS2 Intermediate Reference Frame",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            ID["EPSG",9299]],
        CONVERSION["HS2-TM",
            METHOD["Transverse Mercator",
                ID["EPSG",9807]],
            PARAMETER["Latitude of natural origin",52.3,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8801]],
            PARAMETER["Longitude of natural origin",-1.5,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8802]],
            PARAMETER["Scale factor at natural origin",1,
                SCALEUNIT["unity",1],
                ID["EPSG",8805]],
            PARAMETER["False easting",198873.0046,
                LENGTHUNIT["metre",1],
                ID["EPSG",8806]],
            PARAMETER["False northing",375064.3871,
                LENGTHUNIT["metre",1],
                ID["EPSG",8807]]],
        CS[Cartesian,2],
            AXIS["(E)",east,
                ORDER[1],
                LENGTHUNIT["metre",1]],
            AXIS["(N)",north,
                ORDER[2],
                LENGTHUNIT["metre",1]]],
    VERTCRS["HS2-VRF height",
        VDATUM["HS2 Vertical Reference Frame"],
        CS[vertical,1],
            AXIS["gravity-related height (H)",up,
                LENGTHUNIT["metre",1]]],
    USAGE[
        SCOPE["Engineering survey for HS2 project phases 1 and 2a."],
        AREA["United Kingdom (UK) - HS2 phases 1 and 2a railway corridor from London to Birmingham, Lichfield and Crewe."],
        BBOX[51.45,-2.75,53.3,0]],
    ID["EPSG",9306]]